SELECT 
  cscart_product_descriptions.product_id, 
  cscart_product_descriptions.short_description, 
  IF(
    cscart_product_descriptions.short_description = '' 
    OR cscart_product_descriptions.short_description IS NULL, 
    cscart_product_descriptions.full_description, 
    ''
  ) AS full_description 
FROM 
  cscart_product_descriptions 
WHERE 
  cscart_product_descriptions.product_id IN (
    94987, 94988, 94989, 94990, 94991, 94992, 
    94993, 94994, 94995, 94996, 94997, 
    94998, 94999, 95000, 95001, 95002, 
    95003, 95004, 95005, 95006, 95007, 
    95008, 95009, 95010, 95011, 95012, 
    95013, 95014, 95015, 95016, 95017, 
    95018, 95019, 95020, 95021, 95022, 
    95023, 95024, 95025, 95026, 95027, 
    95028, 95029, 95030, 95031, 95032, 
    95033, 95034
  ) 
  AND cscart_product_descriptions.lang_code = 'en'

Query time 0.00110

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost_info": {
      "query_cost": "21.63"
    },
    "table": {
      "table_name": "cscart_product_descriptions",
      "access_type": "range",
      "possible_keys": [
        "PRIMARY",
        "product_id"
      ],
      "key": "PRIMARY",
      "used_key_parts": [
        "product_id",
        "lang_code"
      ],
      "key_length": "9",
      "rows_examined_per_scan": 48,
      "rows_produced_per_join": 48,
      "filtered": "100.00",
      "cost_info": {
        "read_cost": "16.83",
        "eval_cost": "4.80",
        "prefix_cost": "21.63",
        "data_read_per_join": "183K"
      },
      "used_columns": [
        "product_id",
        "lang_code",
        "short_description",
        "full_description"
      ],
      "attached_condition": "((`nuie_scalesta_net`.`cscart_product_descriptions`.`product_id` in (94987,94988,94989,94990,94991,94992,94993,94994,94995,94996,94997,94998,94999,95000,95001,95002,95003,95004,95005,95006,95007,95008,95009,95010,95011,95012,95013,95014,95015,95016,95017,95018,95019,95020,95021,95022,95023,95024,95025,95026,95027,95028,95029,95030,95031,95032,95033,95034)) and (`nuie_scalesta_net`.`cscart_product_descriptions`.`lang_code` = 'en'))"
    }
  }
}